Ultimate Review

Question 1

Hovering over the answer to this question is a DOM event.

Answer

true

Question 2

Why is it useful to be able to pass one function into another?

Accepted Answer

This allows you to have more control over when and how a function gets executed.

Answer

This allows you an alternative to removeElement when removing an element from the DOM.

Answer

Passing one function into another is the only way to log messages to the console.

Answer

Passing in other data types like strings make a function less efficient overall.

Question 3

Why are events useful?

Accepted Answer

Because we can tie behavior to them.

Answer

Because they keep a webpage static.

Answer

Because they keep us from having to write for loops.

Question 4

Why are functions called "first-class citizens" in JavaScript?

Accepted Answer

Because they can be stored in variables or passed into functions like any other datatype.

Answer

Because they were created in a previous language before being brought into JavaScript.

Answer

Because they must be used as rarely as possible to keep from polluting the global scope.

Question 5

You can set a listener for an event you want to handle on a sibling of the parent of your target element, because of event delegation.

Answer

true

Fragen in diesem Quiz (5)